<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索 添加 -->
      <el-row :gutter="20">
        <el-col :span="6">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">     <!-- clearable可清空搜索数据之后返回整体的菜单 -->
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column prop="username" label="姓名"></el-table-column>
        <el-table-column prop="email" label="邮箱"></el-table-column>
        <el-table-column prop="mobile" label="电话"></el-table-column>
        <el-table-column prop="role_name" label="角色"></el-table-column>
        <el-table-column  label="状态">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column  label="操作" width="185px">
           <template slot-scope="scope">
             <!-- 修改按钮 -->
           <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
           <!-- 删除按钮 -->
           <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
           <!-- 分配角色按钮 -->
           <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">     <!-- 消息提示 -->
               <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
               </el-tooltip>
           </template>
        </el-table-column>
        </el-table-column>
      </el-table>
    <!-- 分页区域 -->
     <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[1, 2, 5, 10]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
        </el-pagination>
        <!-- 添加用户对话框 -->
        <el-dialog
          title="添加用户"
          :visible.sync="addDialogVisible"
          width="50%"
          @close="addDialogClosed">
          <!--  内容主体区域-->
          <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px" >
            <el-form-item label="用户名" prop="username">
              <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
              <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
              <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
              <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
            </el-form>
          <!--底部区域  -->
          <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
          </span>
        </el-dialog>
        <!-- 修改用户的对话框 -->
        <el-dialog
              title="修改用户信息"
              :visible.sync="editDialogVisible"
              width="50%"
              @close="editDialogClosed"
            >
              <!-- 内容主体 -->
              <el-form
                :model="editForm"
                ref="editFormRef"
                :rules="editFormRules"
                label-width="70px"
              >
                <el-form-item label="用户名">
                  <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                  <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                  <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
              </el-form>
              <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
              </span>
            </el-dialog>
    </el-card>
    <!-- 分配用户角色 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
       @click="setRoleDialogClosed">
      <div>
        <p>当前的用户:{{userInfo.username}}</p>
        <p>当前的角色:{{userInfo.role_name}}</p>
        <p>分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">     <!-- el-select  下拉菜单-->
            <el-option
              v-for="item in rolesLsit"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
 </div>
</template>

<script>
export default {
  data () {
     // 自定义邮箱规则
        var checkEmail = (rule, value, callback) => {
          const regEmail = /^\w+@\w+(\.\w+)+$/
          if (regEmail.test(value)) {
            // 合法邮箱
            return callback()
          }
           // 返回一个错误提示
          callback(new Error('请输入合法邮箱'))
        }
        // 自定义手机号规则
        var checkMobile = (rule, value, callback) => {
          const regMobile = /^1[34578]\d{9}$/
          if (regMobile.test(value)) {
            return callback()
          }
          // 返回一个错误提示
          callback(new Error('请输入合法的手机号码'))
        }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: '',
        //当前的页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 2
      },
      userlist: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible:false,
      //添加用户表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      //添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur'  },//失去焦点时触发验证时机
                   {
                     min: 2,
                     max: 10,
                     message: '用户名的长度在2～10个字',
                     trigger: 'blur'
                   }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur'  },//失去焦点时触发验证时机
                   {
                     min: 6,
                     max: 15,
                     message: '用户名的长度在6～15个字',
                     trigger: 'blur'
                   }
        ],
        email: [
        { required: true, message: '请输入邮箱', trigger: 'blur'  },//失去焦点时触发验证时机

        {validator:checkEmail,trigger:'blur'}
      ],
      mobile: [
        { required: true, message: '请输入手机号', trigger: 'blur'  },//失去焦点时触发验证时机
      { validator: checkMobile, trigger: 'blur' }

      ]
      },
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //查询到的用户信息对象
      editForm: {},
      //修改表单的验证规则对象
      // 编辑用户表单验证
       editFormRules: {
             email: [
               { required: true, message: '请输入用户邮箱', trigger: 'blur' },
               { validator: checkEmail, trigger: 'blur' }
             ],
             mobile: [
               { required: true, message: '请输入用户手机号码', trigger: 'blur' },
               { validator: checkMobile, trigger: 'blur' }
             ]
        },
        //控制分配角色对话框的显示与隐藏
        setRoleDialogVisible: false,
        //需要被分配角色的用户信息
        userInfo: {},
        //所有角色的数据列表
        rolesLsit: [],
        //已选中的ID值
        selectedRoleId: ''
      }
  },
  created () {
    this.getUserList()
  },
  methods: {
  async getUserList(){
     const { data: res } = await this.$http.get('users',{
       params: this.queryInfo,
       })   //get参数用params获得
       if(res.meta.status !== 200) {
         return this.$message.error('获取用户列表失败！')
       }
       this.userlist = res.data.users
       this.total = res.data.total
       console.log(res)
  },
    // 监听pagesize 改变的事件
  handleSizeChange(newSize) {
    // console.log(newSize)
    this.queryInfo.pagesize = newSize
    this.getUserList()
  },
  // 监听页码值改变的事件
  handleCurrentChange(newPage) {
    // console.log(newPage)
    this.queryInfo.pagenum = newPage
    this.getUserList()
  },
  //监听switch开关状态的改变
    async userStateChanged(userinfo) {
      // console.log(userinfo)
    const {data: res} =  await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
    if(res.meta.status !== 200){
      userinfo.mg_state = !userinfo.mg_state   //如果更新是失败，取反
      return this.$message.error('更新用户状态失败！')
    }
    this.$message.success('更新用户状态成功！')
    },
    //监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid)
        if(!valid) return
        //可以发起用户的网络请求
        const {data: res} = await this.$http.post('users',this.addForm)

        if(res.meta.status != 201){
           this.$message.error('添加用户失败!')
        }
          this.$message.success('添加用户成功!')
          //隐藏添加用户的对话框
          this.addDialogVisible = false
          //重新获取列表数据
          this.getUserList()
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      const {data: res} =  await this.$http.get('users/' + id)

      if(res.meta.status !== 200){
        return this.$message.error('查询用户失败！')
      }

       this.editForm = res.data    //对数据进行保存
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
      },
      //修改用户信息并提交
      editUserInfo() {
        // 提交请求前，表单预验证
             this.$refs.editFormRef.validate(async valid => {
               // console.log(valid)
               // 表单预校验失败
               if (!valid) return
               const { data: res } = await this.$http.put(
                 'users/' + this.editForm.id,
                 {
                   email: this.editForm.email,
                   mobile: this.editForm.mobile
                 }
               )
               if (res.meta.status !== 200) {
                 this.$message.error('更新用户信息失败！')
               }
               // 隐藏添加用户对话框
               this.editDialogVisible = false
               this.$message.success('更新用户信息成功！')
               this.getUserList()
             })
  },
  //根据id删除对应信息
  async removeUserById (id) {
        const confirmResult = await this.$confirm(            //promise  用await
          '此操作将永久删除该用户, 是否继续?',
          '提示',
          {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
          }
        ).catch(err => err)
        // 点击确定 返回值为：confirm
        // 点击取消 返回值为： cancel
        if (confirmResult !== 'confirm') {
          return this.$message.info('已取消删除')
        }
        const { data: res } = await this.$http.delete('users/' + id)

        if (res.meta.status !== 200) return this.$message.error('删除用户失败！')
        this.$message.success('删除用户成功！')
        this.getUserList()
  },
    //展示分配角色的对话框
     async setRole(userInfo) {
      this.userInfo = userInfo
      //在展示对话框之前获取所有角色的列表
      const {data:res} = await this.$http.get('roles')
      if(res.meta.status !== 200){
        return this.$message.error('获取角色列表失败！')
      }

      this.rolesLsit = res.data
      this.setRoleDialogVisible = true
    },
    // 分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色!')
      }
    const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectedRoleId})
     if (res.meta.status !== 200) {
     return this.$message.error('更新角色失败！')
       }


      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 分配角色对话框关闭事件
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    },
  }
}

</script>

<style lang="less" scoped>
</style>
